Plunge blade



FIG. 1 is a front perspective view of a plunge blade showing my new design;

FIG. 2 is a left elevation view of a plunge blade;

FIG. 3 is a front elevation view of a plunge blade;

FIG. 4 is another front perspective view of a plunge blade; and,

FIG. 5 is a rear perspective view of a plunge blade.

The new design is for a saw blade for cutting brick and mortar. 

The ornamental design for a plunge blade, as shown and described. 